Dog resting with signs of illness
Updated April 16, 2024 • 7 min read

Urinary Tract Infection in Dogs: Symptoms and Treatment

Urinary tract infections (UTIs) are common in dogs, particularly females and older animals. While usually treatable with antibiotics, untreated UTIs can lead to serious complications including kidney infections or bladder stones. Recognizing symptoms early ensures prompt treatment and prevents progression.

Common Symptoms to Monitor

Watch for frequent urination attempts with small amounts of urine, straining or crying during urination, blood in urine (appears pink, red, or brown), accidents in previously house trained dogs, excessive licking of the genital area, and cloudy or strong smelling urine. Some dogs, especially seniors, may show subtle signs like increased water consumption or lethargy.

Risk Factors and Predispositions

Female dogs have shorter urethras, making them more susceptible to bacterial entry. Older dogs, those with diabetes mellitus, Cushing's disease, or weakened immune systems face higher risks. Certain breeds like Shih Tzus, Bichon Frises, and Yorkshire Terriers may be predisposed to urinary crystals that irritate the bladder lining and promote infection.

Diagnosis Process

Veterinarians diagnose UTIs through urinalysis, which checks for white blood cells, bacteria, blood, and crystals. A urine culture may be performed to identify specific bacteria and determine effective antibiotics. Blood work assesses kidney function, while imaging (X-rays or ultrasound) helps detect bladder stones or structural abnormalities.

Treatment Approaches

Most uncomplicated UTIs respond well to antibiotics for seven to fourteen days. It's crucial to complete the entire course even if symptoms improve quickly. Underlying conditions like diabetes require concurrent management. For recurrent UTIs, longer antibiotic courses, urinary acidifiers, or special diets may be recommended to prevent crystal formation.

Prevention Strategies

Ensure constant access to fresh, clean water to encourage frequent urination and flush bacteria. Provide regular bathroom breaks, especially for older dogs or those with mobility issues. Maintain good hygiene around the genital area. For dogs with recurrent issues, discuss preventive strategies with your veterinarian, which may include cranberry supplements or urinary health diets.

What are signs of UTI in dogs?
Common signs include frequent urination attempts with small amounts, straining to urinate, blood in urine, accidents in the house, licking the genital area excessively, and cloudy or strong smelling urine. Some dogs may show no obvious symptoms initially.
Are certain dogs more prone to UTIs?
Yes. Female dogs have shorter urethras making them more susceptible. Older dogs, those with diabetes, Cushing's disease, or bladder stones also have higher risk. Breeds like Shih Tzus, Bichon Frises, and Yorkshire Terriers may be predisposed to urinary crystals.
How is dog UTI diagnosed and treated?
Veterinarians diagnose UTIs through urinalysis and sometimes urine culture. Treatment typically involves antibiotics for 7-14 days. Underlying conditions like diabetes or bladder stones require additional management. Always complete the full antibiotic course even if symptoms improve.